package com.chixing.day05_oop;

public class MethodOverrideDemo {
    public static void main(String[] args) {
        Son s = new Son();

    }


     void fun(){}
}

class Father{
    public Account add(int x){
        return null;
    }
}

class Son extends Father{
    public Account add(int x){
        return null;
    }
}
